The official spin-off date — when Time Inc. will become a stand-alone company and be publicly traded — is June 6.

Time Warner made the disclosure in an SEC filing on Thursday.

The publisher of People, Time, Sports Illustrated, Fortune, Real Simple, InStyle and other magazines, will go by the ticker symbol TIME.

Time Warner will keep its name and its TWX symbol. All Time Warner shareholders of record as of May 23 will be entitled to receive the shares.

As a result, the new Time Inc. is expected to have 715,000 beneficial holders of shares of common stock controlling approximately 110.3 million shares.

“As an independent publicly traded company, we believe we can more effectively focus on our objectives and satisfy the strategic needs of our business,” said Time Inc. chairman and CEO Joe Ripp in the SEC filing released Thursday.

The filing acknowledged that the 500 people cut in February will not be the end of the downsizings.

“We anticipate additional head-count reductions and real estate consolidations in the future,” said the filing. As widely reported, Time Inc. said that its lease for the Time & Life Building expires in 2017, and the company anticipates real estate reduction costs of $50 million or more from a move to a new HQ.

Where the new headquarters will be was not disclosed, but downtown Manhattan and even a relocation to New Jersey have been mentioned.

Time Inc., as previously reported, will have to make a one-time payment of $1.4 billion to Time Warner.

Part of that will go to pay for the British publishing unit known as IPC, which has been managed by Time Inc. but technically was always listed as a subsidiary of the parent, not Time Inc.

Time’s revenue and earnings trends have been down for several years. It had total revenue of $3.35 billion in 2013, down 2 percent from $3.436 billion in 2012; operating income of $330 million, down 21 percent from $420 million in 2012; and net income of $201 million last year, down 24 percent from $263 million a year earlier.

The company warned, “We are experiencing declines in our print advertising and newsstand sales as a result of market conditions in the magazine publishing industry as well as the economic environment in the United States and internationally.”

It said its largest title is People, with about 19 percent of its revenue in 2013, or $636 million.